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<p>[QUOTE=&quot;PyrotekNX, post: 139340, member: 3918&quot;]It is obvious that that coin has been cleaned and allowed to re-tone a bit.</p><p><br /></p><p>Copper and bronze coins are very reactive metals.&nbsp; The only thig that will prevent them from toning is to put them in a perfect vaccum (none exist) and encase them in a completely inert holder (none exist).&nbsp; Any surface contamination will continue to work on the coin even after being slabbed.&nbsp; Carbon spots are fairly common and are caused by drops of spittle or from planchet defects.</p><p><br /></p><p>Out of all the Indian head cents minted, there are only a few known specimens which are ms67 red.&nbsp; The difference between a ms66RB 1864 and a ms67 red is about $25,000.[/QUOTE]</p><p><br /></p>

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